Can the future aggregate actions of people be predicted from relevant sets of data that describe them? That, of course, is what Isaac Asimov's invented mathematical discipline of psychohistory was supposed to do.
Some Japanese researchers claim to have made some progress towards that goal :
These guys have used ideas from statistical mechanics to model the behaviour of humans influenced by word-of-mouth interactions and advertisements.
In this paper, Ishii and co derive a bunch of equations that...
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